/*
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 * and open the template in the editor.
 */
package enterprise.web_jpa_war.servlet;

import enterprise.web_jpa_war.entity.Adherent;
import enterprise.web_jpa_war.entity.Demande;
import enterprise.web_jpa_war.entity.Oeuvre;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.PersistenceUnit;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.transaction.UserTransaction;

/**
 *
 * @author flo
 */
@WebServlet(name = "AddToBasket", urlPatterns = {"/AddToBasket"})
public class AddToBasket extends HttpServlet {

    @PersistenceUnit
    private EntityManagerFactory emf;
    
     @Resource
    private UserTransaction utx;
    
    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
       
        EntityManager em = null;
        try {
            String idOeuvre = (String) request.getParameter("id");
            utx.begin();
            em = emf.createEntityManager();
            String query = "select o from Oeuvre o where o.id = " + idOeuvre;
            Oeuvre oeuvre = (Oeuvre) em.createQuery(query).getSingleResult();
            HttpSession bdaSession = request.getSession();
            Adherent adherent = (Adherent) bdaSession.getAttribute("authUser");
            if(adherent == null)
                request.getRequestDispatcher("index.jsp").forward(request, response);
            Demande newDemande = new Demande(adherent,oeuvre, new Date(), false);
            em.persist(newDemande);
            utx.commit();
            request.getRequestDispatcher("LoadAllTypes").forward(request, response);
        } catch (Exception ex) {
            throw new ServletException(ex);
        } finally {
            if(em != null) {
                em.close();
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
